P0106

Code

GWM P — Powertrain

- Invalid indicator / the intake manifold absolute pressure / barometric pressure sensor of

Brand: GWM

Type: P — Powertrain

Views: UK: 15 EN: 37 RU: 64

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Page language: EN

Bad MAP/BARO sensor (contaminated, internally damaged or failed)
Wiring problems: open, short to voltage, short to ground, or high resistance in signal/power/ground circuits
Poor or intermittent sensor reference voltage or ground at the ECM
Vacuum leaks, intake air leaks, or stuck/blocked intake plumbing affecting sensor readings
Faulty intake manifold, boost control hardware (wastegate/solenoids) or clogged intake
ECM hardware fault or incorrect software/calibration

Read freeze-frame and live data with a scan tool; record MAP (kPa or inHg) and BARO values at key ON/engine OFF and at idle
Compare MAP at key ON/engine OFF to measured ambient barometric pressure (they should be similar)
Visually inspect sensor, connector, and harness for damage, corrosion, or loose pins
Check for vacuum/intake leaks: inspect hoses, PCV plumbing, intake boots and intercooler (if present)
Measure sensor supply (typically 5 V reference) and ground with a multimeter
Backprobe sensor signal and observe voltage change when applying/ releasing vacuum (hand vacuum pump) or changing engine load

Sensor supply (reference) voltage: typically ~4.75–5.25 V (verify against vehicle spec)
Sensor ground: near 0 V; low resistance to chassis ground
MAP/BARO signal voltage: typically ~0.5–4.5 V depending on manifold pressure and sensor design
At key ON, engine OFF, MAP ≈ BARO (approx. 80–105 kPa / 29–31 inHg depending on altitude)
MAP signal should change smoothly and promptly with applied vacuum or engine load (no sudden jumps/noise)

Retrieve and record DTC(s), freeze-frame data and live MAP/BARO readings with a scan tool.
With key ON and engine OFF, compare MAP reading to expected atmospheric/barometric pressure. If they differ significantly, suspect sensor or wiring.
Perform visual inspection of sensor, connector and harness for damage, corrosion, bent pins or loose terminals.
Check for intake and vacuum leaks (spray safe smoke test or use a hand-held vacuum pump on sensor port); repair leaks before replacing parts.
Backprobe the sensor: verify reference voltage (~5 V), ground continuity and observe signal voltage while varying intake vacuum (use hand pump) — sensor should respond smoothly and proportionally.
Wiggle harness and connector while monitoring live data to reveal intermittent faults. Inspect/repair wiring as needed (splice, replace harness, or repair pins).
If wiring and power/ground are good but sensor output is out of range or nonresponsive, replace the MAP/BARO sensor.
After repair, clear codes and perform test drive/functional checks. Re-scan for reappearance of code and verify MAP response under various loads/altitudes.
If code returns after sensor replacement and wiring checks, consider ECM diagnosis or reflash/update with dealer-level tooling as a last step.

Failed MAP/BARO sensor
Connector corrosion or bent pins at the sensor
Damaged or chafed wiring harness to the sensor (open or shorted signal)
Vacuum hose disconnected, split, or leaking between intake manifold and sensor
Intermittent 5 V reference or ground to the sensor
Intake restriction (dirt, carbon) or turbo system leak (on turbocharged engines)

⚠️ Status

ECM detects MAP/BARO sensor output is invalid or out of expected range — check sensor, wiring, vacuum leaks and ECM inputs.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5–2.0 hours

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P0106 — - Invalid indicator / the intake manifold absolute pressure / barometric pressure sensor of